How to find the Atomic Structure of a Constituent

  • Thread starter Shelnutt2
  • Start date
  • #1
57
0
For a project/idea I'm working on, I need to find the charge density of tap water. I've read that this can be determined by simply subtracting total protons minus total electrons. I've got a list of elements that are in the water, but I'm not 100% sure how to find the exact number of electrons and protons for everything. Elements such as Calcium are easy to find, but then Bicarbonate? I've googled and can't seem to find it. If someone can point me in the right direction, it would be great!

Constituent:

Calcium
Magnesium
Sodium
Potassium
Bicarbonate
Sulfate
Chloride
Fluoride
Bromide
Silica
Nitrite
Ammonia
Phosphorus (dissolved)
Aluminum
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Iron (dissolved)
Lead
Lithium
Manganese
Selenium
Strontium
Vanadium


Thanks
 

Answers and Replies

  • #2
Borek
Mentor
28,569
3,023
For a project/idea I'm working on, I need to find the charge density of tap water. I've read that this can be determined by simply subtracting total protons minus total electrons.
Water is neutral, so the charge density is zero.
 
  • #3
57
0
Water is neutral, so the charge density is zero.
H2O is neutral, but with all the ions in the water, there has to be something. Even an insignificant amount would still mean something to me.
 
  • #4
Borek
Mentor
28,569
3,023
Solutions are neutral as well. Exactly the same amount of positive and negative ions are dissolved.
 
  • #5
chemisttree
Science Advisor
Homework Helper
Gold Member
3,464
505
For a project/idea I'm working on, I need to find the charge density of tap water. I've read that this can be determined by simply subtracting total protons minus total electrons...
That's a very unusual definition. Where did you see it?
 
  • #6
57
0
That's a very unusual definition. Where did you see it?

I got it from a textbook I have. The section talks about tachmen and uses a Tortoises-Hares fable to explain it. Really crummy section, the rest of the book is okay. So I was just going off of the one sentence I quoted below.

Visscher said:
They defined a cell scalar field p(c,t), the electric charge density, obtained from the net charge in the cell (positive minus negative) by dividing by the volume dt(c) = dr^3.
http://books.google.com/books?id=LZ...s+and+Electrodynamics&client=firefox-a&pgis=1

Do you have any better "definitions" on how to calculate charge density? This is the only thing I am stumped on.
 

Related Threads on How to find the Atomic Structure of a Constituent

  • Last Post
Replies
9
Views
3K
  • Last Post
Replies
10
Views
2K
  • Last Post
Replies
1
Views
3K
Replies
2
Views
631
  • Last Post
Replies
2
Views
1K
Replies
5
Views
8K
Replies
1
Views
1K
  • Last Post
Replies
8
Views
17K
Replies
4
Views
5K
Top